If you need to file a claim, you will be required to provide the insurance company with documentation supporting the value of the item that has been damaged. Most of this will be found within the WAX app if you've uploaded the relevant pictures and documents during the process of adding your collection in. Acceptable documentation includes:

Appraisals

Purchase invoices or receipts

An inventory list with a detailed description of the item and value

A loan agreement documenting value

Photos

Videos